Sectional steam-generator



(No Model.)

W. BURLINGAME.

SEGTIONALSTEAM GENERATOR.

Patented Jan. 23,1883.

N. "215015. Photo-Llllwgmphcr. Waslvingficm u. c.

UNITED STATES PATENT OFFICE.

WILLIAM BUBLINGAME, OF EXETER, MASSACHUSETTS.

'SECTIONAL STEAM-GENERATOR.

SPECIFICATION forming part of Letters Patent No. 271,031, dated January23, 1883.

Application filed October 30,1882. (No model.) I

10 all whom it may concern:

Be it known that I, WILLIAM BURLINGAME, a citizen of the United States,residing at Exeter, in the county of Rockingham and State ofMassachusetts, have invented certain new and useful Improvements inSectional Steam- Generators; and I do hereby declare the following tobee. full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same, reference being bad to the accompanying drawings, and toletters or figures of reference marked thereon, which form a part ofthis specification.

My improvements relate to a class of castiron sectional steam-generatorscomposed of a number of rectangular boxes united by suitableconnections, in number according to the power or volume of steamrequired, each section being a complete generator, an instance of theclass of generators to which my improvements pertain being shown inFigure l of the drawings as a rectangular box, A,

'closed on all'sides, and having a series of openings, at a, 850., inopposite sides,united by tubes to prevent communication between theinside and exterior of the box, these openings and tubes being to permitof expansion and contraction of the iron, to avoid fracture of thelatter, and to provide additional radiatingsurfaces.

The object of my invention is to provide greater radiating surface andlessen to a marked degree liability of fracture of the met al fromexpansion and contraction, and I effect my object by dividing the boxhorizontally into two boxes of smaller capacity and uniting these twoboxes by a series of hollow intercommunicating columns or tubes ofwrought metal.

The drawings accompanying this specification. represent, in Fig. l, aperspective view of a steam-generator as heretofore manufactured. Fig. 2is a vertical cross-section, and Fig. 3 a side elevation, of a generatorcontaining my improvements.

thus made being substantially like those heretofore in use, except thatit is of much less height, and hence ofl'ers much less area of metal inonecasting to be subjected to danger of fracture by expansion andcontraction.

0 represents a second hollow rectangular case or box of the same sizeand shape in horizontal section as the box B, but preferably of muchless height, the box G being disposed above or alongside the box B, asthe case may be, and connected with the latter by tubes or hollowcolumns 0 c, &c.,of wroughtdron, which are erected upon the lower box,and unite the two by suitable screw-connections, d e, &c.

The two boxes B O, united by the columns a c, constitute a singlecomplete generator, and

the sides or ends of each box, as the case may be, are to be providedwith inlet and outlet steam-ports, having screw-th readed nipples, bywhich two sections may be united in manner as heretofore generallypracticed in generators of this class. The comparatively small area .ofthe boxes B G lessens to a greatdegree liability of fracture of themetal by alternate expansion and contraction. The wrought-metal tubes 0provide extended heat-radiating surface, and are proof against injuryfrom expansion and contraction.

I claim- A set of detachable tubular columns,in combination with tworectangular boxes connected by said columns, said boxes beingconstructed with openings through them from side to side, substantiallyas set forth.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM BURLINGAME.

Witnesses:

H. E. LODGE, THos. T. BAILEY

